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MONTREAL,
Dec. 28, 2012 /PRNewswire/ - CN (TSX: CNR) (NYSE: CNI) announced today it has reached a tentative agreement with the International Brotherhood of Electrical Workers (IBEW) System Council 11 to renew the labour contract for approximately 700 CN signals and communications employees in
Canada.

Details of the agreement - negotiated prior to the expiry of the current contract on
Dec. 31, 2012 -- are being withheld pending ratification by the union's membership. CN expects to hear the results of the union's ratification vote before the end of
January 2013.

CN - Canadian National Railway Company and its operating railway subsidiaries - spans
Canada and mid-America, from the Atlantic and Pacific oceans to the
Gulf of Mexico, serving the ports of
Vancouver,
Prince Rupert, B.C.,
Montreal,
Halifax,
New Orleans, and
Mobile, Ala., and the key metropolitan areas of
Toronto,
Buffalo,
Chicago,
Detroit,
Duluth, Minn./
Superior, Wis.,
Green Bay, Wis.,
Minneapolis/St. Paul,
Memphis, and
Jackson, Miss., with connections to all points in
North America. For more information on CN, visit the company's website at
www.cn.ca

Forward-Looking Statements

Certain information included in this news release constitutes "forward-looking statements" within the meaning of
the United States Private Securities Litigation Reform Act of 1995 and under Canadian securities laws. CN cautions that, by their nature, these forward-looking statements involve risks, uncertainties and assumptions. The Company cautions that its assumptions may not materialize and that current economic conditions render such assumptions, although reasonable at the time they were made, subject to greater uncertainty. Such forward-looking statements are not guarantees of future performance and involve known and unknown risks, uncertainties and other factors which may cause the actual results or performance of the Company or the rail industry to be materially different from the outlook or any future results or performance implied by such statements.

Important risk factors that could affect the forward-looking statements include, but are not limited to, the effects of general economic and business conditions, industry competition, inflation, currency and interest rate fluctuations, changes in fuel prices, legislative and/or regulatory developments, compliance with environmental laws and regulations, actions by regulators, various events which could disrupt operations, including natural events such as severe weather, droughts, floods and earthquakes, labor negotiations and disruptions, environmental claims, uncertainties of investigations, proceedings or other types of claims and litigation, risks and liabilities arising from derailments, and other risks detailed from time to time in reports filed by CN with securities regulators in
Canada and
the United States. Reference should be made to "Management's Discussion and Analysis" in CN's annual and interim reports, Annual Information Form and Form 40-F filed with Canadian and U.S. securities regulators, available on CN's website, for a summary of major risks.

CN assumes no obligation to update or revise forward-looking statements to reflect future events, changes in circumstances, or changes in beliefs, unless required by applicable Canadian securities laws. In the event CN does update any forward-looking statement, no inference should be made that CN will make additional updates with respect to that statement, related matters, or any other forward-looking statement.